This is the "kill zone." Welding overhead is universally cited as the most difficult position. Gravity is now actively working against the welder, trying to pull the molten metal out of the joint and onto the welder’s helmet—or worse, causing the weld to convex outward, leaving the internal root unfused. In 5G, the welder must maintain a tight arc length and increase travel speed slightly, effectively "spraying" the metal into the joint before gravity can claim it.
Use a dedicated pipe stand (like a "Stork") to simulate field conditions during practice. 5g position welding